1 // Copyright 2019 The Amber Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef ANDROID_AMBER_SCRIPT_H_ 16 #define ANDROID_AMBER_SCRIPT_H_ 17 18 #include <android_native_app_glue.h> 19 #include <memory> 20 #include <string> 21 #include <vector> 22 23 #include "amber/amber.h" 24 #include "amber/result.h" 25 26 namespace amber { 27 namespace android { 28 29 struct AmberScriptInfo { 30 std::string asset_name; // Script asset name. Note it is not a 31 // path and just the name of script file. 32 std::string script_content; // Script itself from the script file. 33 amber::ShaderMap shader_map; 34 }; 35 36 // A class to load scripts for Amber under assets/amber/ into 37 // |script_info_|. We assume that file extension of those scripts 38 // is ".amber" and all files with the extension are scripts for 39 // Amber. 40 class AmberScriptLoader { 41 public: 42 explicit AmberScriptLoader(android_app* app); 43 ~AmberScriptLoader(); 44 45 Result LoadAllScriptsFromAsset(); GetScripts()46 const std::vector<AmberScriptInfo>& GetScripts() const { 47 return script_info_; 48 } 49 50 private: 51 // Find all files with ".amber" extension and set |asset_name| of 52 // |script_info_| as their names. In addition, return all shader 53 // file names that have ".spv" extensions. 54 std::vector<std::string> FindAllScriptsAndReturnShaderNames(); 55 56 // Return content of script named |script_name| under 57 // assets/amber/ as a std::string. 58 std::string ReadScript(const std::string& script_name); 59 60 // Return SPIRV binary of script named |shader_name| under 61 // assets/amber/ as a std::vector<uint32_t>. 62 std::vector<uint32_t> ReadSpvShader(const std::string& shader_name); 63 64 // Return content of asset named |asset_name| under assets/amber/ 65 // as a std::vector<uint8_t>. 66 std::vector<uint8_t> ReadContent(const std::string& asset_name); 67 68 android_app* app_context_ = nullptr; 69 std::vector<AmberScriptInfo> script_info_; 70 }; 71 72 } // namespace android 73 } // namespace amber 74 75 #endif // ANDROID_AMBER_SCRIPT_H_ 76